Dies for forming hollow utensil handles



' March 24, 1925. 1,5305528.

- J. H. SINGER DIES FOR FORMING HOLLOW UTENSIL HANDLES Filed March 1. 1923 3 Sheets-Sheet l March 24, 1925. 1,530,528

J. H. SINGER DIES FOR FORMING HOLLOW UTENSIL HANDLES 3 Sheets-Sheet 2 Filed March 1. 1923;

Him 2 Wham? m J. H. SINGER DIES FOR FORMING HOLLOW UTENSIL HANDLES March 24, 1925.

Filed iarch 1. 1923 3 Sheets-Sheet 3 VF 2% m s Er. Ir. it 9 23:? zlgzzw 6 ,1101 may:

ton, in the (county of ing a plurality finished handlesbeing ejected -f 701nthe op--- Patented Mar. 24, 1925.

UNITED me e 1 SINGER; easement Q3101 vrE sew e espi res a sem n:

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i Applieationfi-leQM-srch 1 1923. fierial No 622,429.

To all to ham, it may Be known that =citizen5 of theUnite'd Statearesiding at Ganeon/cam:

- Ohio, have-inventedeertain -newhand useful Improvements in Dies for Forming Hollow 'Utensil'Handlespf which the 'following is a specification.

' I I 5Ihisinvention rel atesto diesiorsforming for cooking UtBnSllStHld sheet metal handles;

similar articles and to 4 the method: oi forniing -the same-panel-the=objeets oi the iln-m PIOXGIDBIIQ are to provide" amaehine inelnd- 0t sets of dies, into wl-iich metal strips or'sheets are fed at one: end, the

rt posite end-'ofthemachine; themetal; being beading or through the nachine from one operation to the nexhwth'e finished handle being e ected from the the upper die in blanked,

may be fed into the forward"ripperend ofthe machine and successively blanked,,-and folded, and finally shapedby SUCCGSSlYG operations' of the; upper dies, the product automatically passing downward rearward lower rear end of; the machine. An embodiment of the-invention thus-set forth in general terms is-illnstrated; inthe accompanyingdrawings, in which-- Figure l is a side elevation; partly insec tion, of the npper and lower dies, showing;

theraised position op plan View or the lower die;

Fi 3, a section on theline 3 -3, andg ig. 2;

Fig. 4:, a section enthe line Fig. 1 a d' IgIJoengr H; SINGER,

-Stark -and State I of: v

- -.tivewposition support and.

previded upper. or ects may be at-,-

dies for; blanking,-

The forwarden connected to the and to theth'ooks from front to rear,

and-Fig. 2

: Fig.

Fig. 5, a section on thewline 5.-'-5,-.:1 ?ig. 1

6, aelongitndinal sectionlthrongh the forming-dies showing the same in thetopera- Fig; 7, zit-perspective view ofs one OLE-the blanks a Flgl eorr plet in'g operation; and

9, aperspeetive views .l. aind1e.

8, a. perspective; niewrjofi the spartly dd-pldhlct, afterithe foldingfor beadotethe. finished i ,nurnerals of-vreference. refer to 51 11111311133113 thronghoutsthe; drawings. w ITl'1elower dlesgare assembled uponithedbed the longitudinally or base 1,;wliich is mounted. npon aesuitable mehned at a I cons1derable angle The top side; of. the bed .i the longitudihalirib 2 ith. the widenedpnrtion 3: at'e the frontend: of theinaeh ine and with grooxiednportion Asatlth lower or rear Lend-2 of thehmachine.

: The lower blanking vdie :'is 1nonnted up0n I the enl argedr. portion 3 ozfi. the longitlrdinal rib and" is providedihe cn tting-iedge 6 shaped to properly form thelblankshownaat 7 in Fig. 7. Thiscuttmg edge is ,c'onyexed longitudinally asbest shown in F1g.. 1, a in ing diet) is permit-the the inclined surface? ing on :f-olding dies.

order to produce therp roper shearingzaction.

portionof thelotver blankprovidedziwith. the opening 6?. to blank t0. pass...do.wn\'vard along of therrib 2 to. the bead- The lower beading or. xfolding die includes a; pair of slidable transverse niovernenttoward ;and. .-fr:om; each other within the guides 94; The blocks BLare i norrnally held intheiopen position as shown in Fig. 2, in i engagement with thee-posts. 10, v

by means of the spir pins. 12.. ilpon", the blocks 8 13. connected. to the rib ,2. or portion of: thesdie. inFigjfZ, it will be seen that other stat onary -As best shown the in-nen longitudin a1 springs lliiwhichgare al edges: 14: otsthebloeks 8 are slightly inclined .towarch,each;=;other pose of limiting the as it slides downwar this :being: .for vthe pur- IHOVBIHGIlt: ofithet blank d vfroxn the blanlgingedie,

the front end of the blank enga ing the edges of the blocks 8 and being hel in posi tion to be folded or beaded.

The lower, inner, longitudinal, edge portions of the blocks 8 are concaved as shown at 15 and the upper outer longitudinal edge portions of the blanks are chamfered or beveled as at 16. Transversely disposed guide plates 17 are fixed to the blocks 8 and provided with the guide openings 18. A tapered guide 19 is mounted beyond the beading or folding die in position to guide the partly completed product shown at 20 in Fig. 8, to the shaping die.

The lower shaping die in the grooved por tion 4 of the rib 2 comprises the central depressible plunger 21 having the groove 22 in its upper face and the oscillating blocks 23, each of which is provided with the upper groove 24.

The plunger 21 may be provided with any suitable means for normally holding the same in raised position. Each of the rotatable blocks 23 is mounted upon a rocker shaft 26 and is normally held in the raised position by means of the springs 27, which hold the blocks in engagement with the stop pins 28, as shown in Fig. 1. As illustrated in'this figure, it will be seen that the grooves 22 and 24 are all in alignment in position to receive the partly finished product 20.

The knock-out 29 is slidably mounted in the transverse grooves 30 and arranged to be normally held in position over the lower shaping die, as shown in Figs. 1 and 2, by means of the spiral, springs 31, which are connected to the pins 32 upon the rear end portion of the knock-out and to the pins 33 carried upon the guide members 30. In the normal position, this knock-out also acts as a guide to guide the partly finished product 20 into the grooves 22 and 24.

An aperture 34, beveled at its outer edge as at 35, is formed in the shank 36 of the knockout. A stop 37 is located at the rear end of the forming die to limit the longitudinal movement of the partly completed product as it is passed into the shaping die.

The upper or movable part of the machine includes the head 38 mounted for reciprocating motion toward and from the lower dies in a line perpendicular to the normal plane of the lower dies and carries the upper blanking, folding or beading and shaping dies.

The upper blanking die comprises the block 39 shaped to fit snugly within the lower blanking die 5, the longitudinal lower edges of the block being beveled as 40, in order to bend the longitudinal edges of the block 7 as shown at 41.

The spring pressed plungers 42 are provided in the block 39 for the purpose of engaging the metal strip or sheet in advance of the upper blanking die, to hold the strip against movement at this time and also to facilitate forcing the blank to the bottom of the lower blanking die, in order that the same may slide downward to the folding or heading die.

The upper folding or heading device includes two spaced pairs of depending cam members 48, connected to the under side of the head 38 in position to engage the beveled edges 16 of the blocks 8 and slide the blocks transversely toward each other as shown in Fig. 4. A pair of depending fingers 44 are carried by the head 38 between the cam members 43 and provided with enlarged head portions 45 arranged to be received through the openings 18 of the guide plates 17, to assist in moving the blocks 8 back to the normal position, as the head is raised.

A depending finger 46 is carried by the head 38 in position to be received in the opening 34 formed in the knock-out 29, the lower end of said finger being beveled as at 47 for engagement with the beveled edge 35 of the opening, for the purpose of withdrawing the knock-out form over the lower shaping die, when the head descends, as shown in Fig. 5.

The upper shaping die 48 is provided with the reduced lower central portion 49 having the longitudinal groove 50, shaped to produce the proper curve in the finished handle, shown at 51 in Fig. 9. The portion 49 terminates in the beveled shoulders 52. A spring pressed plunger 53 is carried in the die 48 and arranged to engage the product in advance of the upper die, and to loosen the finished handle from the upper die as the head is raised.

In operating the machine, a strip of sheet metal of suitable width as indicated at A in Fig. 1, is placed over the lower blanking die in the position shown in said figure, the end of the strip engaging the stop 54. As the.

head is depressed, a blank as shown at 7 is sheared between the upper and lower blanking dies 39 and 5 respectively, the longitudinal edges of the blank being bent up as indicated at 41, by means of the beveled edges 40 of the upper die 39.

The blank 7 slides rearward and downward through the opening 6 and between the blocks 8 of the folding or heading die, being stopped as the forward end of the blank reaches the forward end portions of the blocks 8, which engage the blank and hold the same in position for the next operation.

Upon the next downward movement of the head, the blocks 8 are moved toward each other by means of the cam members 43, the bent edge portions 41 of the blank facilitating the folding or heading of the same as the die blocks 8 are brought together as shown in Fig. 4, rolling each edge portion of the blank as shown at 55, forming the partly completed product 20.

As the head. ascends, the die blocks 8 are moved back into the initial position by means of the springs 11, the fingers 4a assuring a positive movement of these blocks in the event the partly finished product should become wedged between the same.

As the product 20 is released, it will slide rearward and downward through the guide 19 and into the grooves 22 and 24 of the lower shaping die, the knock-out 29 guiding the piece into position.

\Vith the next descent of the head 38, the

beveled finger 46 engaging the aperture 34 in the knock-out 2.9, will move the same from over the lower shaping die and the upper shaping die 48 will engage the product, depressing the plunger 21 and rocking the die blocks 23 upon their pivots, the beveled shoulders 52 upon the upper shaping die pressing the end portions of the handle over the beveled portions 57 of the die blocks 23, forming the complete handle, as shown in Fig. 6, with the angular lugs 58 as shown in Fig. 9.

As the head ascends, the die blocks 23 will be rocked back to the initial position by means of the springs 27, and the plunger 21 will be raised to the initial position, carrying the finished handle upward, and into the path of the knock-out, which at this time will be released by the finger 46, the springs 31 shooting the knock-out back into the initial position, striking the finished handle and ejecting the same from the die.

It will, of course, be understood that with each descent of the head, three complete operations will be performed, as a blank will be cut in the blanking dies, the partly finished product will be formed in the folding or beading dies and a complete handle will be shaped in the shaping dies.

l claim: 7

1. In a machine of the character described, a folding die including a pair of dieblocks mounted for reciprocation toward each other, means for normally holding the die blocks in open position, the outer edges of the die blocks being beveled, apertured guide plates extending outward from the die blocks, a reciprocating head provided with beveled cam members for engagement with the beveled edges of the die blocks to move the blocks toward each other as the head is lowered and fingers upon the head provided with inclined portions for engagement with the apertures of the guide plates to move the blocks apart as the head is raised.

2. In a machine of the character described in claim 1, means for normally holding the die blocks slightly inclined toward each other to limit the movement of a blank entered between the. die blocks.

8. A machine for forming utensil handles comprising means for simultaneously bending the longitudinal edges of the same, means for engaging the longitudinal bent edges and forming the blank into cross sectional B-shape, bending means for bending the partially completed product longitudinally into U-shape with angular outturned lugs at its extremities, the blank being automatically released from each of said means and positioned in the next succeeding means with each operation oi the machine.

4. A machine of the character described including an inclined stationary block, a head mounted for reciprocation perpen' dicular to the block, and a series of cooperating upper and lowerrdies mounted upon the head and block respectively, and comprising a blanking die for cutting a blank and simultaneously bending the longitudinal edges thereof, a folding die including reciprocating die blocks and a perpendicular reciprocating head for operating the die blocks to engage the bent edges of the blank and fold the blank into substantially B-shaped crosssectional shape and a forming die for bending the partially complete product longitudinally to produce a utensil handle. JOHN H. SINGER.

stamping a blank and I 

